Actuating mechanism for elevator-stops.



APPLICATION FILED APR. 26, 1912'.

Patented Dec. 29, 1914.

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ANDREW M. COYLE, OF NEW YORK, N. Y., ASSIGNOR- T GURNEY ELECTRIC ELEVATOR CCMPANY, OF I-IONESDALE, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

ACTUATING MECHANISM FOR ELEVATOR-STOPS.

Specification of Letters Patent.

Patented Dec. 29, 11914:.

Application filed April 26, 1912. Serial No. 693,324.

To all whom it may concern:

Be it known that 1, ANDREW M. CoYLE, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Actuating Mechanism for Elevator-Stops, of which the following is a specification, reference being bad to the accompanying drawings, forming a part thereof.

My invention relates to actuating mechanism for elevator stops and its object is to provide a simple and effective device whereby an automatic stop device of any suitable form may be driven by the movement of an elevator car as it approaches the end of its path. of travel.

To this end my invention consists in the novel construction and arrangement of parts shown in the drawing herewith, which I will describe in the following specification and the novel features of which I will set forth in appended claims.

Referring to the drawings, Figure 1 is a diagrammatic representation of my improved apparatus and an elevator car showing the manner in which these are related to each other. Fig. 2 is a side elevation on a somewhat larger scale of a pair of actuating drums or sheaves which may be employed with a specific embodiment of my invention. Figs. 3 and 1 illustrate details of construction these figures being respectively a side elevation and a plan View of one of the traveling rope sheaves and its supporting frame and guide. Figs. 5 and 6 are diagrammatic views of the car and certain parts of my improved stop actuating mechanism with the parts in different relative positions. These figures illustrate the operation of the device.

Like characters of reference designate corresponding parts in all of the figures.

10 designates an elevator car upon the side of which is an idle sheave 11. In the upper part of the hatchway at one side thereof is a vertical track 12 on which is slidably mounted a frame 13 which supports a sheave 14. One end of a rope 15 is afiixed to this frame above sheave let at 16 and this is carried up and over a sheave or drum 1'? of the stop device 19 about which drum it is given several turns and to which it may be affixed. From thence it is led.

down to and under the sheave 14; and across the elevator hatchway' in the plane of the car sheave 1]. to a fixed point 18 where it is fastened. In the lower part of the hatchway is another vertical track 20, on which is .a frame 21 supporting a sheave 22.

23 1s a rope aflixed to this lower frame at 24. This is led up and over a sheave 25 directly under sheave 17 and then down to a welght 26 which is heavier than the frame 21 and the parts which itsupports and therefore tends to keep this frame at the upper end of the guide track 20. Another rope 27 is fastened to the lower portion of frame 21. This rope is carried down to and under a fixed sheave 28 thence up and over the sheave 22 and across the elevator hatchway to a fixed point 29 where its other end is fastened. This rope is also in the path of movement of the car sheave 11. If both of the ropes 15 and 27 are to be engaged by the same car sheave 11, which is a preferred construction, they should be in a. common vertical plane, but obviously this specific feature is not a necessary one. as the two ropes may be and in the preferred construction are entirely independent of each other and may if desired be on diiferent sides of the car. The portions of these ropes which are to be engaged by sheave 11 are shown in lines which are inclined from the horizontal and this angle of inclination may vary to suit conditions.

I have not shown the stop device as it does not form a part of the present invention. It may comprise one or more valves or electrical switches such as are in common use in conjunction with elevator installations for the purpose of slowing and eventually stopping the elevator car at either end of its path of travel. An example of a stop device which may be actuated by this mechanism may be seen in application Serial No. 698,326 filed by me herewith.

The operation of this device is as follows: The car during the intermediate portions of its run does not affect either of the ropes 15, 27. When it is running up it will at a predetermined point in its path of travel, bring the sheave 11 into engagement with that portion of rope 15 which extends across the hatchway. If this rope is in a horizontal position the upward movement of the car will immediately cause the sheave 14: and its supporting frame to travel upward on guide rail 12 at a rate of speed proportional to that of the carbut substantially less than that of the car. This will impart rotation to the sheave or drum 17 in the direction of the arrow in Fig. 1.

As the various parts shown and also the mechanism of the stop device itself have considerable inertia, I prefer to start the movement of these parts gradually, and for this reason the part of the rope which extends across the hatchway is inclined as shown. It is obvious that the greater the inclination of this portion of the rope, the more gradual will be the acceleration of the parts set into action by the engagement of sheave 11 with it as there will be almost none of the movement of the car imparted to the sheave frame 13 at the first engagement of the rope by the sheave, but the movement will increase until the sheave 11 is above sheave l l in some such position as that in which the parts are shown in Fig. 5. From such a point on the rate of travel of sheave frame 13 will be substantially proportional to that of the car. Consequently the sheave 17 which is a part of the stop mechanism will be gradually set in motion and the motion thus imparted to it will continue until the car is brought to rest. When the car is moved down again the operation just described will be repeated inversely until the parts are restored to their initial positions. This is because the weight of the sheave frame 18 and the parts which it carries is great enough to rotate the sheave 17 and its connected parts. If the downward movement of the car is continued, the car sheave 11 will at the desired point engage the rope 27. This will gradually move sheave 22 downward. The operative position of the parts during this portion of the operation is illustrated in Fig. 6. As the sheave 22 and its supporting frame is moved downward it will pull the rope 23 down at the same time rotating the sheave or drum 25 of the stop device in the direction indicated by the arrow in Fig. 1, and raising weight 26. The latter is heavier than the frame 21 and its connected parts so that when the car is moved up again it will restore the parts to their initial positions.

What I claim is:

1. The combination with an elevator car, arranged to run in a hatchway, a stop device for the car, a rope connected with the stop device, a sheave at one side of the hatchway mountedto move in a direction parallel with that of the cars travel, said rope from the stop device passing about a portion of said sheave and led to a point on the opposite side of the hatchway and another sheave on the car arranged to engage the rope as the car approaches the end of its path of travel to actuate the stop device.

2. The combination with an elevator car arranged to run in a hatchway, a stop device for the car comprising a drum, a frame at one side of the hatchway mounted to move in a direction parallel with that of the cars travel, a sheave on said frame, a rope from the frame to the stop device drum, passing about said drum and back to and about said movable sheave and to a fixed point on the opposite side of the hatchway, and another sheave on the car arranged to engage the rope as the car approaches the end of its path of travel to actuate the stop device.

3. The combination with an elevator car arranged to run in a hatchway, a stop device for the car comprising a pair of drums, a frame at one side of the hatchway and at one end thereof mounted to move in a direction parallel with that of the cars travel, a sheave on said frame, another frame at one side of the hatchway also mounted to move in a direction parallel with that of the cars travel, a sheave mounted on said other frame; a rope connected with one of said stop device drums and associated with one of the movable sheaves, another rope connected with the other drum and associated with the other of the movable sheaves, said ropes extending from the movable sheaves across the hatchway; and a sheave on the car arranged to engage one or the other of said ropes as the car approaches one or the other of the ends of its path of travel to actuate the stop device.

i. The combination. with an elevator car arranged to run in a hatchway, a stop device for the car comprising a pair of drums, a vertical guide rail at one side of the hatch way and at one end thereof a slidable frame mounted on said rail, a sheave on said frame; another vertical rail at one side of the hatchway at the other end thereof, a second frame mounted on said other rail, a sheave mounted on said second frame, a rope connected with one of the stop device drums and associated with one of the movable sheaves, another rope connected with the other drum and associated with "he other of the movable sheaves, said ropes extending diametrically from the movable sheaves across the hatchway; and a sheave on the car arranged to engage one or the other of said ropes as the car approaches one or the other of the ends of its path of travel to actuate the stop device.

In witness whereof, I have hereunto set my hand this 23rd day of April, 1912.

ANDREW M. (BOYLE.

Vitnesses NORMAN J. TAYLOR, C. S. BURNHAM.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of ZPatents,

' Washington, I). C. 

